September weather forecast
Napoleon, AL

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Napoleon, Alabama, with an average temperature ranging between min 64.6°F (18.1°C) and max 84.2°F (29°C).

Temperature

September denotes a minimal variation in the average high-temperature to a moderately hot 84.2°F (29°C) from August's 88.5°F (31.4°C). During the nights in September, an average low-temperature of 64.6°F (18.1°C) is observed.

Heat index

September's heat index is calculated to be a tropical 91.4°F (33°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'feels like', integrates the air's temperature and its humidity to showcase the felt temperature by people. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.

Humidity

In Napoleon, the average relative humidity in September is 74%.

Rainfall

In September, the rain falls for 14.1 days. Throughout September, 2.36" (60mm) of precipitation is accumulated. Throughout the year, in Napoleon, there are 181.7 rainfall days, and 39.06" (992mm) of precipitation is accumulated.

Snowfall

April through November are months without snowfall in Napoleon.

Daylight

In September, the average length of the day in Napoleon is 12h and 22min.
On the first day of September, sunrise is at 6:16 am and sunset at 7:06 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 6:26 pm CDT.

Sunshine

The average sunshine in September is 8.5h.

UV index

The average daily maximum UV index in September in Napoleon is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average UV index of 5 in September transforms into this advice:
Guard yourself - Avoiding sunburn is suggested. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
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Frequently asked questions

How hot is it in Napoleon in September?

In September, the average high-temperature and low-temperature in Napoleon are 84.2°F (29°C) and 64.6°F (18.1°C) respectively. In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is calculated to be 91.4°F (33°C).

What is the average humidity in September in Napoleon?

In September, the average relative humidity is 74%.

How much does it rain in Napoleon in September?

In Napoleon, in September, it is raining for 14.1 days, with typically 2.36" (60mm) of accumulated precipitation.

When it does not snow in Napoleon?

April through November are months without snowfall in Napoleon, Alabama.

What is the average length of the day in September in Napoleon?

In Napoleon, the average day length in September is 12h and 22min.

When are sunrise and sunset in September in Napoleon?

In September, on the first day of the month, sunrise is at 6:16 am and sunset at 7:06 pm. On the last day of the month, in Napoleon, Alabama, sunrise is at 6:35 am and sunset at 6:26 pm CDT.

How long on average sun shines in September in Napoleon?

In Napoleon, the average sunshine duration in September is 8.5h.

How high is the UV index in September in Napoleon?

The average daily maximum UV index in September in Napoleon, Alabama, is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Napoleon, AL

Average temperature in September - Napoleon, AL
  • Average high temperature in September: 84.2°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (52°F).

  • Average low temperature in September: 64.6°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (35.4°F).

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Average pressure in September
Napoleon, AL

Average pressure in September - Napoleon, AL
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

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Average wind speed in September
Napoleon, AL

Average wind speed in September - Napoleon, AL
  • Average wind speed in September: 4.9mph

The windiest month (with the highest average wind speed) is January (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.4mph).

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Average humidity in September
Napoleon, AL

Average humidity in September - Napoleon, AL
  • Average humidity in September: 74%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in September
Napoleon, AL

Average rainfall in September - Napoleon, AL
  • Average rainfall in September: 2.36"

The wettest month (with the highest rainfall) is August (4.06").
The driest month (with the least rainfall) is October (1.93").

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Average rainfall days in September
Napoleon, AL

Average rainfall days in September - Napoleon, AL
  • Average rainfall days in September: 14.1 days

The month with the highest number of rainy days is July (22.7 days).
The month with the least rainy days is November (8.5 days).

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Average snowfall in September
Napoleon, AL

Average snowfall in September - Napoleon, AL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.47").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Napoleon, AL

Average snowfall days in September - Napoleon, AL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (1.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Napoleon, AL

Average daylight in September / Average sunshine in September - Napoleon, AL
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in September: 8h and 3min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 0min).

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Average sunshine days in September
Napoleon, AL

Average sunshine days in September - Napoleon, AL
  • Average sunshine days in September: 13.8 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (7.5 days).

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Average UV index in September
Napoleon, AL

Average UV index in September - Napoleon, AL
  • Average UV index in September: 5

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in September
Napoleon, AL

Average cloud cover in September - Napoleon, AL
  • Average cloud cover in September: 32

The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 31).

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Average visibility in September
Napoleon, AL

Average visibility in September - Napoleon, AL
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).

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Napoleon, Alabama, USA

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